YAMATO INC821C Dual-Chamber Multi-Function Incubator

Overview

The YAMATO INC821C Dual-Chamber Multi-Function Incubator is an engineered solution for laboratories requiring simultaneous, independent thermal control across two physically separated compartments within a single footprint. Designed and manufactured in Japan, this instrument integrates a precision upper chamber—configured as a fixed-setpoint incubator with over-temperature protection and timer-based operation—with a programmable lower chamber capable of multi-step temperature profiling (up to 30 steps per program). Its dual-chamber architecture eliminates cross-contamination risks while enabling concurrent workflows: e.g., mammalian cell culture at 37 °C in the upper compartment and cold storage or low-temperature acclimation (e.g., 4–10 °C) in the lower chamber. The system employs Pt100 resistance thermometers for high-stability sensing, solid-state relay (SSR) heating control, and an R134a-based air-cooled refrigeration unit—ensuring compliance with modern environmental refrigerant standards. All structural components—including interior walls, shelves, and door liners—are fabricated from electropolished SUS304 stainless steel, supporting long-term corrosion resistance and ease of decontamination under GLP and ISO 13485-aligned laboratory practices.

Key Features

• Dual independent temperature zones: Upper chamber (fixed-setpoint, 4–50 °C) and lower chamber (programmable, RT+5 to 80 °C), each with dedicated control logic and safety circuitry.
• Advanced thermal management: Forced-air circulation in the upper chamber ensures uniform temperature distribution (±1 °C at 37 °C); natural convection design in the lower chamber minimizes vibration-sensitive sample disturbance.
• Programmable operation: Lower chamber supports up to three concurrent programs (30-step × 1, 15-step × 2, or 10-step × 3), with automatic start/stop, rapid cooldown, and hold functions—ideal for circadian rhythm studies, thermal shock protocols, or staged differentiation assays.
• Robust safety architecture: Integrated self-diagnostic system continuously monitors sensor integrity, heater continuity, SSR functionality, and over-temperature conditions; dual mechanical door locks prevent unauthorized access during critical incubation phases.
• Low-maintenance refrigeration: Air-cooled R134a compressor (250 W) with both manual and automated cyclic defrost modes—reducing ice accumulation without interrupting long-duration experiments.
• Expandable connectivity: Optional RS485 interface enables integration into centralized lab monitoring systems; alarm and recorder output terminals support audit-ready data logging per FDA 21 CFR Part 11 requirements.

Sample Compatibility & Compliance

The INC821C accommodates standard-sized culture vessels—including T-flasks, Petri dishes, multi-well plates, and glassware—within its 143 L (upper) and 150 L (lower) chambers. The 30 mm adjustable shelf spacing (13 positions) and 15 kg per-shelf load rating support stacked configurations and heavy instrumentation such as CO₂ sensors or humidity modules (when externally interfaced). Internal surfaces conform to ISO 8573-1 Class 3 particulate cleanliness when operated in cleanroom-adjacent environments. The device meets IEC 61010-1:2010 safety standards for laboratory equipment and complies with JIS B 7952 (Japanese Industrial Standard for incubators). Its stainless-steel construction and absence of ozone-depleting foams (polyethylene insulation, fluorocarbon-free) align with EU RoHS Directive 2011/65/EU and WEEE recycling frameworks.

Software & Data Management

While the INC821C operates via embedded hardware controllers (VS4 for programming, VS3 for setpoint mode), it supports external data acquisition through optional analog/digital interfaces. The RS485 port enables Modbus RTU communication for integration with SCADA platforms or LIMS environments. Alarm outputs can trigger external annunciators or initiate emergency shutdown sequences in validated production settings. When paired with compliant third-party chart recorders or digital loggers, the system satisfies traceability requirements for GMP-regulated bioprocessing (e.g., upstream seed train expansion or stability testing per ICH Q5C). All temperature deviations exceeding ±0.5 °C are logged with timestamps, supporting root-cause analysis during quality investigations.

Applications

• Simultaneous maintenance of primary cell lines (37 °C) and cryopreserved stock vials (4 °C) without shared airflow pathways.
• Stepwise thermal conditioning of microbial cultures—for example, pre-incubation at 25 °C followed by induction at 37 °C in separate chambers.
• Environmental simulation studies requiring precise ramp-and-soak profiles (e.g., plant tissue culture acclimatization, insect developmental staging).
• Long-term reagent stabilization at controlled sub-ambient temperatures while concurrently running enzymatic assays at physiological conditions.
• Teaching laboratories requiring modular, fail-safe incubation platforms with intuitive operational logic and physical access segregation.

FAQ

What is the maximum ambient temperature at which the INC821C maintains specified performance?
The unit is rated for operation in environments up to 30 °C ambient, with full specification compliance verified at 25 °C ambient per JIS B 7952.
Can the upper and lower chambers operate at identical setpoints?
Yes—though functionally redundant, both chambers may be independently set to the same temperature; however, their control algorithms remain isolated to preserve thermal independence.
Is humidity control available as a factory option?
No—humidity regulation is not integrated; users requiring RH management must employ external humidification systems or sealed secondary enclosures.
Does the INC821C support remote monitoring via Ethernet or Wi-Fi?
Not natively—the RS485 interface requires a protocol converter for TCP/IP bridging; no onboard web server or wireless module is included.
Are calibration certificates provided with shipment?
Factory calibration reports (traceable to JCSS standards) are available upon request; on-site IQ/OQ validation documentation kits can be supplied separately for regulated facilities.